Ballpoint pen



FIG. 1 is a front elevational view of the ballpoint pen showing my design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is an enlarged cross-sectional view the ballpoint pen taken along sectional lines 7—7 in FIG. 1, with the internal mechanism omitted;

FIG. 8 is an enlarged cross-sectional view of the ballpoint pen taken along sectional lines 8—8 in FIG. 1, with the internal mechanism omitted;

FIG. 9 is an enlarged cross-sectional view of the ballpoint pen taken along sectional lines 9—9 in FIG. 1, with the internal mechanism omitted;

FIG. 10 is an enlarged cross-sectional view of the ballpoint pen taken along sectional lines 10—10 in FIG. 1, with the internal mechanism omitted;

FIG. 11 is an enlarged right-side elevational view thereof;

FIG. 12 is a front elevational view thereof with the grip rotated;

FIG. 13 is a an enlarged cross-sectional view of the ballpoint pen taken along sectional lines 13—13 in FIG. 12, with the grip rotated; and,

FIG. 14 is a perspective view thereof.

The stippling shown on the ballpoint pen represents a surface texture.

The broken lines showing interior structure in FIGS. 7 and 13 represent environmental matter and form no part of the claimed design. 

I claim the ornamental design for a ballpoint pen, as shown and described. 